This interactive scatter plot visualizes the relationship between sepal length and petal length for three Iris species, with each species distinguished by a unique shape. Built with React and D3 v7, the visualization uses `scaleLinear` for axes, `scaleOrdinal` with `symbolsFill` for shape encoding, and a custom shape legend. Data is loaded from a CSV file via `csvParse`, and the plot is rendered using SVG elements, demonstrating D3's join method for efficient DOM updates.